I owned a pizza shop while I worked a fulltime job. I bought a second one. I eventually had to sell them. I wish I had quit my job and made the shops work. I had an idea to build a system to weigh every ingredient for every pizza that went out the door because food cost was out of control. Just didn't have the time.
My advice is find the best candidate you can for your first employees. Understand their strengths and weaknesses as compared to your own. As far as day to day operations go they will be almost like a cofounder. Don't hire friends unless you think you can fire them without losing sleep. Absolutely no friends with families.